Highly structured, biomorphous beta-SiC with high specific surface area from Equisetaceae
- Mesoporous, highly structured silicon carbide (beta-SiC) was synthesised from renewable plant materials (two Equisetaceae species) in a one-step carbothermal process at remarkably low temperatures down to 1200 degrees C. The SiC precursor is a silicon-carbon mixture with finely dispersed carbon prepared by pyrolysis of the organic plant matrix. Yields are 3 to 100% (omega(Si/Si) related to the silicon deposited in the plant material), depending on reaction temperature and time. IR spectroscopy, X-ray diffraction, and nitrogen sorption prove the formation of high-purity beta-SiC with minor inorganic impurities after purification and a high specific surface area of up to 660 m(2) g(-1). Scanning electron microscopy shows that the plant morphology is maintained in the final SiC. Sedimentation analysis finds a mean particle size (diameters d(50)) of 20 mu m.
Verfasserangaben: | Mike Neumann, Robert Noeske, Andreas TaubertORCiDGND, Brigitte TierschORCiD, Peter StrauchGND |
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DOI: | https://doi.org/10.1039/c2jm30253e |
ISSN: | 0959-9428 |
Titel des übergeordneten Werks (Englisch): | Journal of materials chemistry |
Verlag: | Royal Society of Chemistry |
Verlagsort: | Cambridge |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2012 |
Erscheinungsjahr: | 2012 |
Datum der Freischaltung: | 26.03.2017 |
Band: | 22 |
Ausgabe: | 18 |
Seitenanzahl: | 6 |
Erste Seite: | 9046 |
Letzte Seite: | 9051 |
Fördernde Institution: | University of Potsdam |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
Peer Review: | Referiert |